Websites Powered by LazySizes
2,999,342 websites tracked using LazySizes (JavaScript libraries) · github.com
LazySizes is a JavaScript library used to add functionality to web pages. Its official site is github.com. PoweredBy tracks the websites that use LazySizes across the public web; the tracked counts, adoption trend, and site list on this page are updated from our ongoing crawl of the javascript libraries ecosystem.
Usage trend
500K
1M
1.5M
Feb 2022
Apr 2023
May 2024
Jul 2025
Aug 2026
Domains observed using LazySizes in each month's HTTP Archive crawl,
Feb 2022 to Aug 2026 · peak 1,192,952 in Mar 2023. The tracked total above also
counts sites not re-crawled recently.
Core Web Vitals
LCP 1.9 s
INP 75 ms
CLS 0
TTFB 800 ms
Median site among 967,367 LazySizes sites with Chrome UX data, p75 values, Aug 2026.
Top countries
United States
257,174
Japan
88,025
Germany
86,805
United Kingdom
86,179
India
75,535
Brazil
67,920
France
65,045
Canada
63,289
Sites using LazySizes by audience country, Chrome UX Report.
Top sites by authority
9+
18% · 67 of 372 sites
8+
17% · 1,287 of 7,677 sites
7+
12% · 5,340 of 45,712 sites
6+
10% · 11,071 of 110,136 sites
5+
8% · 20,677 of 246,751 sites
The share of the web's most authoritative domains, by Open Page Rank tier, seen running LazySizes in recent crawls. Only 372 domains worldwide score 9 or higher.
Websites using LazySizes
| # | Domain | Open Page RankOPR | Est. monthly visits (US)Visits (US) | Keywords | First seen |
|---|---|---|---|---|---|
| 401 | la.gov | 8.56/10 | - | - | Feb 2022 |
| 402 | uni-muenchen.de | 8.56/10 | - | - | Feb 2022 |
| 403 | emory.edu | 8.56/10 | 201,700 | 16,626 | Jul 2022 |
| 404 | utwente.nl | 8.56/10 | 11,800 | 6,416 | Aug 2022 |
| 405 | cuni.cz | 8.56/10 | 4,400 | 1,637 | Feb 2022 |
| 406 | nrc.nl | 8.56/10 | 6,500 | 3,719 | Mar 2023 |
| 407 | runsignup.com | 8.55/10 | 391,700 | 187,598 | Sep 2022 |
| 408 | pymnts.com | 8.55/10 | 109,100 | 78,500 | Feb 2022 |
| 409 | accor.com | 8.55/10 | - | - | Feb 2022 |
| 410 | thoughtco.com | 8.55/10 | 4,169,400 | 927,882 | Feb 2022 |
| 411 | inaturalist.org | 8.55/10 | 2,062,000 | 304,368 | Sep 2023 |
| 412 | belgium.be | 8.55/10 | 20,400 | 1,736 | Feb 2022 |
| 413 | udel.edu | 8.55/10 | 126,300 | 47,905 | Feb 2022 |
| 414 | instructables.com | 8.55/10 | 4,267,500 | 1,382,184 | Feb 2022 |
| 415 | nato.int | 8.55/10 | 340,700 | 121,553 | Jun 2023 |
| 416 | arkansas.gov | 8.55/10 | 1,000 | 768 | Feb 2022 |
| 417 | rwth-aachen.de | 8.55/10 | 640 | 1,476 | Jul 2022 |
| 418 | tue.nl | 8.55/10 | 5,600 | 3,367 | Feb 2022 |
| 419 | missouri.edu | 8.55/10 | 111,700 | 10,535 | Feb 2022 |
| 420 | jal.co.jp | 8.55/10 | 484,400 | 83,278 | Feb 2022 |
| 421 | fujitv.co.jp | 8.55/10 | 200 | 245 | Feb 2022 |
| 422 | zoom.com | 8.54/10 | 1,646,200 | 63,526 | Jul 2025 |
| 423 | sciencebasedtargets.org | 8.54/10 | 13,100 | 19,347 | Mar 2022 |
| 424 | lolipop.jp | 8.54/10 | 11 | 20 | Feb 2022 |
| 425 | duolingo.com | 8.54/10 | 213,200 | 57,263 | Aug 2022 |
| 426 | kuleuven.be | 8.54/10 | 4,900 | 4,889 | Dec 2022 |
| 427 | kb.se | 8.54/10 | 6,800 | 235 | Mar 2023 |
| 428 | openstreetmap.fr | 8.54/10 | 17 | 66 | Feb 2022 |
| 429 | sd.gov | 8.54/10 | 67,700 | 11,284 | Feb 2025 |
| 430 | yorku.ca | 8.54/10 | 54,400 | 26,331 | Feb 2022 |
| 431 | uconn.edu | 8.54/10 | 120,000 | 8,114 | Feb 2022 |
| 432 | ana.co.jp | 8.54/10 | 553,300 | 82,036 | Feb 2022 |
| 433 | za.com | 8.53/10 | - | - | Feb 2022 |
| 434 | ard.de | 8.53/10 | 2,700 | 319 | Feb 2025 |
| 435 | peraichi.com | 8.53/10 | 6 | 24 | Feb 2022 |
| 436 | iapp.org | 8.53/10 | 22,600 | 13,331 | Jul 2023 |
| 437 | tunein.com | 8.53/10 | 735,200 | 188,803 | Jan 2024 |
| 438 | uefa.com | 8.53/10 | 3,919,000 | 198,316 | Feb 2022 |
| 439 | spb.ru | 8.53/10 | - | - | Feb 2022 |
| 440 | tiny.cc | 8.53/10 | 35,800 | 640 | Apr 2023 |
| 441 | cancerresearchuk.org | 8.53/10 | 592,000 | 136,583 | Oct 2024 |
| 442 | rt.com | 8.53/10 | 155,000 | 10,000 | Feb 2022 |
| 443 | ucr.edu | 8.53/10 | 112,800 | 12,297 | Feb 2022 |
| 444 | alabama.gov | 8.53/10 | 53,800 | 10,348 | Feb 2022 |
| 445 | uni-hamburg.de | 8.53/10 | 5,500 | 3,110 | Feb 2022 |
| 446 | fsu.edu | 8.53/10 | 247,200 | 10,316 | Feb 2022 |
| 447 | esteri.it | 8.53/10 | 18,500 | 4,818 | Feb 2022 |
| 448 | eldiario.es | 8.53/10 | 10,300 | 43,468 | Mar 2022 |
| 449 | windows.com | 8.52/10 | - | - | Feb 2022 |
| 450 | jp.net | 8.52/10 | 66 | 7 | Feb 2022 |
| 451 | hbo.com | 8.52/10 | 544,600 | 61,638 | Feb 2022 |
| 452 | gorgias.help | 8.52/10 | - | - | Mar 2023 |
| 453 | fortinet.com | 8.52/10 | 755,000 | 88,489 | Jan 2023 |
| 454 | rtbf.be | 8.52/10 | 17,400 | 17,684 | Feb 2022 |
| 455 | itv.com | 8.52/10 | 235,900 | 148,784 | May 2023 |
| 456 | uottawa.ca | 8.52/10 | 35,900 | 20,986 | Feb 2022 |
| 457 | lequipe.fr | 8.52/10 | 45,900 | 42,176 | Feb 2022 |
| 458 | commonsensemedia.org | 8.52/10 | 5,777,600 | 735,072 | Apr 2022 |
| 459 | manchester.ac.uk | 8.52/10 | 64,000 | 18,257 | Mar 2022 |
| 460 | nebraska.gov | 8.52/10 | 97,900 | 26,778 | Jun 2026 |
| 461 | ms.gov | 8.52/10 | 209,500 | 27,026 | Feb 2022 |
| 462 | hu-berlin.de | 8.52/10 | 5,200 | 2,027 | Feb 2022 |
| 463 | upm.es | 8.52/10 | 2,100 | 1,692 | Apr 2022 |
| 464 | theshop.jp | 8.52/10 | - | - | Feb 2022 |
| 465 | ku.edu | 8.52/10 | 80,300 | 6,901 | Nov 2022 |
| 466 | keio.ac.jp | 8.52/10 | 9,400 | 1,068 | Feb 2022 |
| 467 | kununu.com | 8.51/10 | 1,100 | 3,075 | Nov 2024 |
| 468 | official.ec | 8.51/10 | - | - | Feb 2022 |
| 469 | gov.ro | 8.51/10 | 640 | 166 | Feb 2022 |
| 470 | uni-bremen.de | 8.51/10 | 2,000 | 1,789 | Nov 2022 |
| 471 | unizar.es | 8.51/10 | 280 | 138 | Feb 2022 |
| 472 | player.fm | 8.51/10 | 70,900 | 79,109 | Feb 2022 |
| 473 | travelandleisure.com | 8.51/10 | 1,695,300 | 730,010 | Jul 2022 |
| 474 | eu.org | 8.51/10 | - | - | Feb 2022 |
| 475 | arduino.cc | 8.51/10 | 112,300 | 20,206 | Feb 2022 |
| 476 | aip.org | 8.51/10 | 21,800 | 14,396 | Jan 2025 |
| 477 | monash.edu | 8.51/10 | 257,300 | 68,187 | Feb 2022 |
| 478 | az.gov | 8.51/10 | 28,300 | 6,807 | Nov 2024 |
| 479 | ucalgary.ca | 8.51/10 | 11,000 | 10,559 | Mar 2022 |
| 480 | louvre.fr | 8.51/10 | 468,000 | 35,735 | Feb 2022 |
| 481 | coocan.jp | 8.51/10 | - | - | Feb 2022 |
| 482 | hackerone.com | 8.50/10 | 43,300 | 5,407 | May 2023 |
| 483 | minecraft.net | 8.50/10 | 2,622,500 | 476,607 | Feb 2022 |
| 484 | nazwa.pl | 8.50/10 | 720 | 101 | Feb 2022 |
| 485 | consentmanager.net | 8.50/10 | 310 | 489 | Jul 2026 |
| 486 | base.shop | 8.50/10 | - | - | Feb 2022 |
| 487 | state.pa.us | 8.50/10 | - | - | Feb 2022 |
| 488 | asus.com | 8.50/10 | 1,078,400 | 375,127 | Feb 2022 |
| 489 | tfl.gov.uk | 8.50/10 | 244,800 | 86,703 | Feb 2022 |
| 490 | ada.org | 8.50/10 | 341,800 | 96,535 | Feb 2022 |
| 491 | icrc.org | 8.50/10 | 64,500 | 19,714 | Nov 2025 |
| 492 | reservix.de | 8.50/10 | 250 | 899 | Feb 2022 |
| 493 | clemson.edu | 8.50/10 | 373,300 | 114,661 | Feb 2022 |
| 494 | case.edu | 8.50/10 | 694,400 | 120,999 | Feb 2022 |
| 495 | britishcouncil.org | 8.50/10 | 20,900 | 11,121 | Feb 2022 |
| 496 | bc.edu | 8.50/10 | 205,200 | 43,802 | Feb 2022 |
| 497 | umontreal.ca | 8.50/10 | 3,700 | 761 | Feb 2022 |
| 498 | miami.edu | 8.50/10 | 5 | 13 | Aug 2023 |
| 499 | ku.dk | 8.50/10 | 5,000 | 2,453 | Sep 2022 |
| 500 | nikkei.co.jp | 8.50/10 | 490 | 255 | Feb 2022 |
Open Page Rank is the domain's authority score (0 to 10, from the open web link graph); the list is ordered by it and covers sites seen in recent crawls. Visits and keywords are estimated US organic search figures.
Download top 10,000 as CSV (zip) →
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